摘要
波形钢腹板PC组合梁在成桥状态下的受力与顶推施工中的受力有较大的不同,为了明确箱梁顶推施工过程中受力性能,以国内第一座采用整体式顶推施工的大跨度波形钢腹板PC组合梁为例,采用板壳实体模型详细计算了组合梁在顶推过程中各个部分构件的受力特性。揭示了箱梁不同位置处截面上顶底板混凝土的应力变化规律、支墩反力变化情况和梁体的变形等,可供分析计算同类桥梁结构受力参考。
There is the greater difference between the stresses of corrugated steel web PC composite beam in the finished bridge state and in the incremental launching construction. In order to make clearly the stressperformance in the incremental launching construction of box beam, according to the long-span corrugated steel web PC compositebeamintheintegratedincrementallaunchingconstructionfirstlyin China,theshellsolidmodelisusedto calculatethestressperformanceofeach componentofcompositeboxbeam. Theresultshowsthestressvariation law of the concretes at the top and bed of box beam in the different positions, the reaction variation of buttress and the deformationofbeam,whichcanbereferredforanalyzingandcalculatingthestructuralstressofthesimilarbridges.
出处
《城市道桥与防洪》
2016年第3期99-102,116,共5页
Urban Roads Bridges & Flood Control
关键词
波形钢腹板
顶推
板壳实体模型
顶底板混凝土
应力变化规律
corrugated steelweb
incrementallaunching
shellsolid model
top-bed concrete
stressvariation law
